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        Module&nbsp;signals
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<h1 class="epydoc">Source Code for <a href="signals-module.html">Module signals</a></h1>
<pre class="py-src">
<a name="L1"></a><tt class="py-lineno">  1</tt>  <tt class="py-line"><tt class="py-comment">#!/usr/bin/env python</tt> </tt>
<a name="L2"></a><tt class="py-lineno">  2</tt>  <tt class="py-line"><tt class="py-comment"></tt><tt class="py-comment">#coding: utf-8</tt> </tt>
<a name="L3"></a><tt class="py-lineno">  3</tt>  <tt class="py-line"><tt class="py-comment"></tt><tt class="py-docstring">"""</tt> </tt>
<a name="L4"></a><tt class="py-lineno">  4</tt>  <tt class="py-line"><tt class="py-docstring">File:    signals.py</tt> </tt>
<a name="L5"></a><tt class="py-lineno">  5</tt>  <tt class="py-line"><tt class="py-docstring">Author:  Patrick Chasco</tt> </tt>
<a name="L6"></a><tt class="py-lineno">  6</tt>  <tt class="py-line"><tt class="py-docstring">Created: July 26, 2005</tt> </tt>
<a name="L7"></a><tt class="py-lineno">  7</tt>  <tt class="py-line"><tt class="py-docstring"></tt> </tt>
<a name="L8"></a><tt class="py-lineno">  8</tt>  <tt class="py-line"><tt class="py-docstring">Purpose: A signals implementation</tt> </tt>
<a name="L9"></a><tt class="py-lineno">  9</tt>  <tt class="py-line"><tt class="py-docstring">"""</tt> </tt>
<a name="L10"></a><tt class="py-lineno"> 10</tt>  <tt class="py-line"> </tt>
<a name="L11"></a><tt class="py-lineno"> 11</tt>  <tt class="py-line"> </tt>
<a name="L12"></a><tt class="py-lineno"> 12</tt>  <tt class="py-line"><tt class="py-comment">#========================================================</tt> </tt>
<a name="L13"></a><tt class="py-lineno"> 13</tt>  <tt class="py-line"><tt class="py-comment"></tt><tt class="py-comment"># Implementation</tt> </tt>
<a name="L14"></a><tt class="py-lineno"> 14</tt>  <tt class="py-line"><tt class="py-comment"></tt><tt class="py-comment">#========================================================</tt> </tt>
<a name="L15"></a><tt class="py-lineno"> 15</tt>  <tt class="py-line"><tt class="py-comment"></tt><tt class="py-keyword">from</tt> <tt class="py-name">weakref</tt> <tt class="py-keyword">import</tt> <tt class="py-op">*</tt> </tt>
<a name="L16"></a><tt class="py-lineno"> 16</tt>  <tt class="py-line"><tt class="py-keyword">import</tt> <tt class="py-name">inspect</tt> </tt>
<a name="L17"></a><tt class="py-lineno"> 17</tt>  <tt class="py-line"> </tt>
<a name="Signal"></a><div id="Signal-def"><a name="L18"></a><tt class="py-lineno"> 18</tt> <a class="py-toggle" href="#" id="Signal-toggle" onclick="return toggle('Signal');">-</a><tt class="py-line"><tt class="py-keyword">class</tt> <a class="py-def-name" href="signals.Signal-class.html">Signal</a><tt class="py-op">:</tt> </tt>
</div><div id="Signal-collapsed" style="display:none;" pad="+++" indent="++++"></div><div id="Signal-expanded"><a name="L19"></a><tt class="py-lineno"> 19</tt>  <tt class="py-line">    <tt class="py-docstring">"""</tt> </tt>
<a name="L20"></a><tt class="py-lineno"> 20</tt>  <tt class="py-line"><tt class="py-docstring">    class Signal</tt> </tt>
<a name="L21"></a><tt class="py-lineno"> 21</tt>  <tt class="py-line"><tt class="py-docstring"></tt> </tt>
<a name="L22"></a><tt class="py-lineno"> 22</tt>  <tt class="py-line"><tt class="py-docstring">    A simple implementation of the Signal/Slot pattern. To use, simply </tt> </tt>
<a name="L23"></a><tt class="py-lineno"> 23</tt>  <tt class="py-line"><tt class="py-docstring">    create a Signal instance. The instance may be a member of a class, </tt> </tt>
<a name="L24"></a><tt class="py-lineno"> 24</tt>  <tt class="py-line"><tt class="py-docstring">    a global, or a local; it makes no difference what scope it resides </tt> </tt>
<a name="L25"></a><tt class="py-lineno"> 25</tt>  <tt class="py-line"><tt class="py-docstring">    within. Connect slots to the signal using the "connect()" method. </tt> </tt>
<a name="L26"></a><tt class="py-lineno"> 26</tt>  <tt class="py-line"><tt class="py-docstring">    The slot may be a member of a class or a simple function. If the </tt> </tt>
<a name="L27"></a><tt class="py-lineno"> 27</tt>  <tt class="py-line"><tt class="py-docstring">    slot is a member of a class, Signal will automatically detect when</tt> </tt>
<a name="L28"></a><tt class="py-lineno"> 28</tt>  <tt class="py-line"><tt class="py-docstring">    the method's class instance has been deleted and remove it from </tt> </tt>
<a name="L29"></a><tt class="py-lineno"> 29</tt>  <tt class="py-line"><tt class="py-docstring">    its list of connected slots.</tt> </tt>
<a name="L30"></a><tt class="py-lineno"> 30</tt>  <tt class="py-line"><tt class="py-docstring">    """</tt> </tt>
<a name="Signal.__init__"></a><div id="Signal.__init__-def"><a name="L31"></a><tt class="py-lineno"> 31</tt> <a class="py-toggle" href="#" id="Signal.__init__-toggle" onclick="return toggle('Signal.__init__');">-</a><tt class="py-line">    <tt class="py-keyword">def</tt> <a class="py-def-name" href="signals.Signal-class.html#__init__">__init__</a><tt class="py-op">(</tt><tt class="py-param">self</tt><tt class="py-op">)</tt><tt class="py-op">:</tt> </tt>
</div><div id="Signal.__init__-collapsed" style="display:none;" pad="+++" indent="++++++++"></div><div id="Signal.__init__-expanded"><a name="L32"></a><tt class="py-lineno"> 32</tt>  <tt class="py-line">        <tt class="py-name">self</tt><tt class="py-op">.</tt><tt class="py-name">slots</tt> <tt class="py-op">=</tt> <tt class="py-op">[</tt><tt class="py-op">]</tt> </tt>
<a name="L33"></a><tt class="py-lineno"> 33</tt>  <tt class="py-line"> </tt>
<a name="L34"></a><tt class="py-lineno"> 34</tt>  <tt class="py-line">        <tt class="py-comment"># for keeping references to _WeakMethod_FuncHost objects.</tt> </tt>
<a name="L35"></a><tt class="py-lineno"> 35</tt>  <tt class="py-line"><tt class="py-comment"></tt>        <tt class="py-comment"># If we didn't, then the weak references would die for</tt> </tt>
<a name="L36"></a><tt class="py-lineno"> 36</tt>  <tt class="py-line"><tt class="py-comment"></tt>        <tt class="py-comment"># non-method slots that we've created.</tt> </tt>
<a name="L37"></a><tt class="py-lineno"> 37</tt>  <tt class="py-line"><tt class="py-comment"></tt>        <tt class="py-name">self</tt><tt class="py-op">.</tt><tt class="py-name">funchost</tt> <tt class="py-op">=</tt> <tt class="py-op">[</tt><tt class="py-op">]</tt> </tt>
</div><a name="L38"></a><tt class="py-lineno"> 38</tt>  <tt class="py-line"> </tt>
<a name="Signal.__call__"></a><div id="Signal.__call__-def"><a name="L39"></a><tt class="py-lineno"> 39</tt> <a class="py-toggle" href="#" id="Signal.__call__-toggle" onclick="return toggle('Signal.__call__');">-</a><tt class="py-line">    <tt class="py-keyword">def</tt> <a class="py-def-name" href="signals.Signal-class.html#__call__">__call__</a><tt class="py-op">(</tt><tt class="py-param">self</tt><tt class="py-op">,</tt> <tt class="py-op">*</tt><tt class="py-param">args</tt><tt class="py-op">,</tt> <tt class="py-op">**</tt><tt class="py-param">kwargs</tt><tt class="py-op">)</tt><tt class="py-op">:</tt> </tt>
</div><div id="Signal.__call__-collapsed" style="display:none;" pad="+++" indent="++++++++"></div><div id="Signal.__call__-expanded"><a name="L40"></a><tt class="py-lineno"> 40</tt>  <tt class="py-line">        <tt class="py-keyword">for</tt> <tt class="py-name">i</tt> <tt class="py-keyword">in</tt> <tt class="py-name">range</tt><tt class="py-op">(</tt><tt class="py-name">len</tt><tt class="py-op">(</tt><tt class="py-name">self</tt><tt class="py-op">.</tt><tt class="py-name">slots</tt><tt class="py-op">)</tt><tt class="py-op">)</tt><tt class="py-op">:</tt> </tt>
<a name="L41"></a><tt class="py-lineno"> 41</tt>  <tt class="py-line">            <tt class="py-name">slot</tt> <tt class="py-op">=</tt> <tt class="py-name">self</tt><tt class="py-op">.</tt><tt class="py-name">slots</tt><tt class="py-op">[</tt><tt class="py-name">i</tt><tt class="py-op">]</tt> </tt>
<a name="L42"></a><tt class="py-lineno"> 42</tt>  <tt class="py-line">            <tt class="py-keyword">if</tt> <tt class="py-name">slot</tt> <tt class="py-op">!=</tt> <tt class="py-name">None</tt><tt class="py-op">:</tt> </tt>
<a name="L43"></a><tt class="py-lineno"> 43</tt>  <tt class="py-line">                <tt class="py-name">slot</tt><tt class="py-op">(</tt><tt class="py-op">*</tt><tt class="py-name">args</tt><tt class="py-op">,</tt> <tt class="py-op">**</tt><tt class="py-name">kwargs</tt><tt class="py-op">)</tt> </tt>
<a name="L44"></a><tt class="py-lineno"> 44</tt>  <tt class="py-line">            <tt class="py-keyword">else</tt><tt class="py-op">:</tt> </tt>
<a name="L45"></a><tt class="py-lineno"> 45</tt>  <tt class="py-line">                <tt class="py-keyword">del</tt> <tt class="py-name">self</tt><tt class="py-op">.</tt><tt class="py-name">slots</tt><tt class="py-op">[</tt><tt class="py-name">i</tt><tt class="py-op">]</tt> </tt>
</div><a name="L46"></a><tt class="py-lineno"> 46</tt>  <tt class="py-line">                 </tt>
<a name="Signal.call"></a><div id="Signal.call-def"><a name="L47"></a><tt class="py-lineno"> 47</tt> <a class="py-toggle" href="#" id="Signal.call-toggle" onclick="return toggle('Signal.call');">-</a><tt class="py-line">    <tt class="py-keyword">def</tt> <a class="py-def-name" href="signals.Signal-class.html#call">call</a><tt class="py-op">(</tt><tt class="py-param">self</tt><tt class="py-op">,</tt> <tt class="py-op">*</tt><tt class="py-param">args</tt><tt class="py-op">,</tt> <tt class="py-op">**</tt><tt class="py-param">kwargs</tt><tt class="py-op">)</tt><tt class="py-op">:</tt> </tt>
</div><div id="Signal.call-collapsed" style="display:none;" pad="+++" indent="++++++++"></div><div id="Signal.call-expanded"><a name="L48"></a><tt class="py-lineno"> 48</tt>  <tt class="py-line">        <tt class="py-name">self</tt><tt class="py-op">.</tt><tt id="link-0" class="py-name" targets="Method signals.Signal.__call__()=signals.Signal-class.html#__call__,Method signals.WeakMethod.__call__()=signals.WeakMethod-class.html#__call__"><a title="signals.Signal.__call__
signals.WeakMethod.__call__" class="py-name" href="#" onclick="return doclink('link-0', '__call__', 'link-0');">__call__</a></tt><tt class="py-op">(</tt><tt class="py-op">*</tt><tt class="py-name">args</tt><tt class="py-op">,</tt> <tt class="py-op">**</tt><tt class="py-name">kwargs</tt><tt class="py-op">)</tt> </tt>
</div><a name="L49"></a><tt class="py-lineno"> 49</tt>  <tt class="py-line"> </tt>
<a name="Signal.connect"></a><div id="Signal.connect-def"><a name="L50"></a><tt class="py-lineno"> 50</tt> <a class="py-toggle" href="#" id="Signal.connect-toggle" onclick="return toggle('Signal.connect');">-</a><tt class="py-line">    <tt class="py-keyword">def</tt> <a class="py-def-name" href="signals.Signal-class.html#connect">connect</a><tt class="py-op">(</tt><tt class="py-param">self</tt><tt class="py-op">,</tt> <tt class="py-param">slot</tt><tt class="py-op">)</tt><tt class="py-op">:</tt> </tt>
</div><div id="Signal.connect-collapsed" style="display:none;" pad="+++" indent="++++++++"></div><div id="Signal.connect-expanded"><a name="L51"></a><tt class="py-lineno"> 51</tt>  <tt class="py-line">        <tt class="py-name">self</tt><tt class="py-op">.</tt><tt id="link-1" class="py-name" targets="Method signals.Signal.disconnect()=signals.Signal-class.html#disconnect"><a title="signals.Signal.disconnect" class="py-name" href="#" onclick="return doclink('link-1', 'disconnect', 'link-1');">disconnect</a></tt><tt class="py-op">(</tt><tt class="py-name">slot</tt><tt class="py-op">)</tt> </tt>
<a name="L52"></a><tt class="py-lineno"> 52</tt>  <tt class="py-line">        <tt class="py-keyword">if</tt> <tt class="py-name">inspect</tt><tt class="py-op">.</tt><tt class="py-name">ismethod</tt><tt class="py-op">(</tt><tt class="py-name">slot</tt><tt class="py-op">)</tt><tt class="py-op">:</tt> </tt>
<a name="L53"></a><tt class="py-lineno"> 53</tt>  <tt class="py-line">            <tt class="py-name">self</tt><tt class="py-op">.</tt><tt class="py-name">slots</tt><tt class="py-op">.</tt><tt class="py-name">append</tt><tt class="py-op">(</tt><tt id="link-2" class="py-name" targets="Class signals.WeakMethod=signals.WeakMethod-class.html"><a title="signals.WeakMethod" class="py-name" href="#" onclick="return doclink('link-2', 'WeakMethod', 'link-2');">WeakMethod</a></tt><tt class="py-op">(</tt><tt class="py-name">slot</tt><tt class="py-op">)</tt><tt class="py-op">)</tt> </tt>
<a name="L54"></a><tt class="py-lineno"> 54</tt>  <tt class="py-line">        <tt class="py-keyword">else</tt><tt class="py-op">:</tt> </tt>
<a name="L55"></a><tt class="py-lineno"> 55</tt>  <tt class="py-line">            <tt class="py-name">o</tt> <tt class="py-op">=</tt> <tt id="link-3" class="py-name" targets="Class signals._WeakMethod_FuncHost=signals._WeakMethod_FuncHost-class.html"><a title="signals._WeakMethod_FuncHost" class="py-name" href="#" onclick="return doclink('link-3', '_WeakMethod_FuncHost', 'link-3');">_WeakMethod_FuncHost</a></tt><tt class="py-op">(</tt><tt class="py-name">slot</tt><tt class="py-op">)</tt> </tt>
<a name="L56"></a><tt class="py-lineno"> 56</tt>  <tt class="py-line">            <tt class="py-name">self</tt><tt class="py-op">.</tt><tt class="py-name">slots</tt><tt class="py-op">.</tt><tt class="py-name">append</tt><tt class="py-op">(</tt><tt id="link-4" class="py-name"><a title="signals.WeakMethod" class="py-name" href="#" onclick="return doclink('link-4', 'WeakMethod', 'link-2');">WeakMethod</a></tt><tt class="py-op">(</tt><tt class="py-name">o</tt><tt class="py-op">.</tt><tt id="link-5" class="py-name" targets="Method signals._WeakMethod_FuncHost.func()=signals._WeakMethod_FuncHost-class.html#func"><a title="signals._WeakMethod_FuncHost.func" class="py-name" href="#" onclick="return doclink('link-5', 'func', 'link-5');">func</a></tt><tt class="py-op">)</tt><tt class="py-op">)</tt> </tt>
<a name="L57"></a><tt class="py-lineno"> 57</tt>  <tt class="py-line">            <tt class="py-comment"># we stick a copy in here just to keep the instance alive</tt> </tt>
<a name="L58"></a><tt class="py-lineno"> 58</tt>  <tt class="py-line"><tt class="py-comment"></tt>            <tt class="py-name">self</tt><tt class="py-op">.</tt><tt class="py-name">funchost</tt><tt class="py-op">.</tt><tt class="py-name">append</tt><tt class="py-op">(</tt><tt class="py-name">o</tt><tt class="py-op">)</tt> </tt>
</div><a name="L59"></a><tt class="py-lineno"> 59</tt>  <tt class="py-line"> </tt>
<a name="Signal.disconnect"></a><div id="Signal.disconnect-def"><a name="L60"></a><tt class="py-lineno"> 60</tt> <a class="py-toggle" href="#" id="Signal.disconnect-toggle" onclick="return toggle('Signal.disconnect');">-</a><tt class="py-line">    <tt class="py-keyword">def</tt> <a class="py-def-name" href="signals.Signal-class.html#disconnect">disconnect</a><tt class="py-op">(</tt><tt class="py-param">self</tt><tt class="py-op">,</tt> <tt class="py-param">slot</tt><tt class="py-op">)</tt><tt class="py-op">:</tt> </tt>
</div><div id="Signal.disconnect-collapsed" style="display:none;" pad="+++" indent="++++++++"></div><div id="Signal.disconnect-expanded"><a name="L61"></a><tt class="py-lineno"> 61</tt>  <tt class="py-line">        <tt class="py-keyword">try</tt><tt class="py-op">:</tt> </tt>
<a name="L62"></a><tt class="py-lineno"> 62</tt>  <tt class="py-line">            <tt class="py-keyword">for</tt> <tt class="py-name">i</tt> <tt class="py-keyword">in</tt> <tt class="py-name">range</tt><tt class="py-op">(</tt><tt class="py-name">len</tt><tt class="py-op">(</tt><tt class="py-name">self</tt><tt class="py-op">.</tt><tt class="py-name">slots</tt><tt class="py-op">)</tt><tt class="py-op">)</tt><tt class="py-op">:</tt> </tt>
<a name="L63"></a><tt class="py-lineno"> 63</tt>  <tt class="py-line">                <tt class="py-name">wm</tt> <tt class="py-op">=</tt> <tt class="py-name">self</tt><tt class="py-op">.</tt><tt class="py-name">slots</tt><tt class="py-op">[</tt><tt class="py-name">i</tt><tt class="py-op">]</tt> </tt>
<a name="L64"></a><tt class="py-lineno"> 64</tt>  <tt class="py-line">                <tt class="py-keyword">if</tt> <tt class="py-name">inspect</tt><tt class="py-op">.</tt><tt class="py-name">ismethod</tt><tt class="py-op">(</tt><tt class="py-name">slot</tt><tt class="py-op">)</tt><tt class="py-op">:</tt> </tt>
<a name="L65"></a><tt class="py-lineno"> 65</tt>  <tt class="py-line">                    <tt class="py-keyword">if</tt> <tt class="py-name">wm</tt><tt class="py-op">.</tt><tt class="py-name">f</tt> <tt class="py-op">==</tt> <tt class="py-name">slot</tt><tt class="py-op">.</tt><tt class="py-name">im_func</tt> <tt class="py-keyword">and</tt> <tt class="py-name">wm</tt><tt class="py-op">.</tt><tt class="py-name">c</tt><tt class="py-op">(</tt><tt class="py-op">)</tt> <tt class="py-op">==</tt> <tt class="py-name">slot</tt><tt class="py-op">.</tt><tt class="py-name">im_self</tt><tt class="py-op">:</tt> </tt>
<a name="L66"></a><tt class="py-lineno"> 66</tt>  <tt class="py-line">                        <tt class="py-keyword">del</tt> <tt class="py-name">self</tt><tt class="py-op">.</tt><tt class="py-name">slots</tt><tt class="py-op">[</tt><tt class="py-name">i</tt><tt class="py-op">]</tt> </tt>
<a name="L67"></a><tt class="py-lineno"> 67</tt>  <tt class="py-line">                        <tt class="py-keyword">return</tt> </tt>
<a name="L68"></a><tt class="py-lineno"> 68</tt>  <tt class="py-line">                <tt class="py-keyword">else</tt><tt class="py-op">:</tt> </tt>
<a name="L69"></a><tt class="py-lineno"> 69</tt>  <tt class="py-line">                    <tt class="py-keyword">if</tt> <tt class="py-name">wm</tt><tt class="py-op">.</tt><tt class="py-name">c</tt><tt class="py-op">(</tt><tt class="py-op">)</tt><tt class="py-op">.</tt><tt class="py-name">hostedFunction</tt> <tt class="py-op">==</tt> <tt class="py-name">slot</tt><tt class="py-op">:</tt> </tt>
<a name="L70"></a><tt class="py-lineno"> 70</tt>  <tt class="py-line">                        <tt class="py-keyword">del</tt> <tt class="py-name">self</tt><tt class="py-op">.</tt><tt class="py-name">slots</tt><tt class="py-op">[</tt><tt class="py-name">i</tt><tt class="py-op">]</tt> </tt>
<a name="L71"></a><tt class="py-lineno"> 71</tt>  <tt class="py-line">                        <tt class="py-keyword">return</tt> </tt>
<a name="L72"></a><tt class="py-lineno"> 72</tt>  <tt class="py-line">        <tt class="py-keyword">except</tt><tt class="py-op">:</tt> </tt>
<a name="L73"></a><tt class="py-lineno"> 73</tt>  <tt class="py-line">            <tt class="py-keyword">pass</tt> </tt>
</div><a name="L74"></a><tt class="py-lineno"> 74</tt>  <tt class="py-line"> </tt>
<a name="Signal.disconnectAll"></a><div id="Signal.disconnectAll-def"><a name="L75"></a><tt class="py-lineno"> 75</tt> <a class="py-toggle" href="#" id="Signal.disconnectAll-toggle" onclick="return toggle('Signal.disconnectAll');">-</a><tt class="py-line">    <tt class="py-keyword">def</tt> <a class="py-def-name" href="signals.Signal-class.html#disconnectAll">disconnectAll</a><tt class="py-op">(</tt><tt class="py-param">self</tt><tt class="py-op">)</tt><tt class="py-op">:</tt> </tt>
</div><div id="Signal.disconnectAll-collapsed" style="display:none;" pad="+++" indent="++++++++"></div><div id="Signal.disconnectAll-expanded"><a name="L76"></a><tt class="py-lineno"> 76</tt>  <tt class="py-line">        <tt class="py-keyword">del</tt> <tt class="py-name">self</tt><tt class="py-op">.</tt><tt class="py-name">slots</tt> </tt>
<a name="L77"></a><tt class="py-lineno"> 77</tt>  <tt class="py-line">        <tt class="py-keyword">del</tt> <tt class="py-name">self</tt><tt class="py-op">.</tt><tt class="py-name">funchost</tt> </tt>
<a name="L78"></a><tt class="py-lineno"> 78</tt>  <tt class="py-line">        <tt class="py-name">self</tt><tt class="py-op">.</tt><tt class="py-name">slots</tt> <tt class="py-op">=</tt> <tt class="py-op">[</tt><tt class="py-op">]</tt> </tt>
<a name="L79"></a><tt class="py-lineno"> 79</tt>  <tt class="py-line">        <tt class="py-name">self</tt><tt class="py-op">.</tt><tt class="py-name">funchost</tt> <tt class="py-op">=</tt> <tt class="py-op">[</tt><tt class="py-op">]</tt> </tt>
</div></div><a name="L80"></a><tt class="py-lineno"> 80</tt>  <tt class="py-line"> </tt>
<a name="_WeakMethod_FuncHost"></a><div id="_WeakMethod_FuncHost-def"><a name="L81"></a><tt class="py-lineno"> 81</tt> <a class="py-toggle" href="#" id="_WeakMethod_FuncHost-toggle" onclick="return toggle('_WeakMethod_FuncHost');">-</a><tt class="py-line"><tt class="py-keyword">class</tt> <a class="py-def-name" href="signals._WeakMethod_FuncHost-class.html">_WeakMethod_FuncHost</a><tt class="py-op">:</tt> </tt>
</div><div id="_WeakMethod_FuncHost-collapsed" style="display:none;" pad="+++" indent="++++"></div><div id="_WeakMethod_FuncHost-expanded"><a name="_WeakMethod_FuncHost.__init__"></a><div id="_WeakMethod_FuncHost.__init__-def"><a name="L82"></a><tt class="py-lineno"> 82</tt> <a class="py-toggle" href="#" id="_WeakMethod_FuncHost.__init__-toggle" onclick="return toggle('_WeakMethod_FuncHost.__init__');">-</a><tt class="py-line">    <tt class="py-keyword">def</tt> <a class="py-def-name" href="signals._WeakMethod_FuncHost-class.html#__init__">__init__</a><tt class="py-op">(</tt><tt class="py-param">self</tt><tt class="py-op">,</tt> <tt class="py-param">func</tt><tt class="py-op">)</tt><tt class="py-op">:</tt> </tt>
</div><div id="_WeakMethod_FuncHost.__init__-collapsed" style="display:none;" pad="+++" indent="++++++++"></div><div id="_WeakMethod_FuncHost.__init__-expanded"><a name="L83"></a><tt class="py-lineno"> 83</tt>  <tt class="py-line">        <tt class="py-name">self</tt><tt class="py-op">.</tt><tt class="py-name">hostedFunction</tt> <tt class="py-op">=</tt> <tt id="link-6" class="py-name"><a title="signals._WeakMethod_FuncHost.func" class="py-name" href="#" onclick="return doclink('link-6', 'func', 'link-5');">func</a></tt> </tt>
</div><a name="_WeakMethod_FuncHost.func"></a><div id="_WeakMethod_FuncHost.func-def"><a name="L84"></a><tt class="py-lineno"> 84</tt> <a class="py-toggle" href="#" id="_WeakMethod_FuncHost.func-toggle" onclick="return toggle('_WeakMethod_FuncHost.func');">-</a><tt class="py-line">    <tt class="py-keyword">def</tt> <a class="py-def-name" href="signals._WeakMethod_FuncHost-class.html#func">func</a><tt class="py-op">(</tt><tt class="py-param">self</tt><tt class="py-op">,</tt> <tt class="py-op">*</tt><tt class="py-param">args</tt><tt class="py-op">,</tt> <tt class="py-op">**</tt><tt class="py-param">kwargs</tt><tt class="py-op">)</tt><tt class="py-op">:</tt> </tt>
</div><div id="_WeakMethod_FuncHost.func-collapsed" style="display:none;" pad="+++" indent="++++++++"></div><div id="_WeakMethod_FuncHost.func-expanded"><a name="L85"></a><tt class="py-lineno"> 85</tt>  <tt class="py-line">        <tt class="py-name">self</tt><tt class="py-op">.</tt><tt class="py-name">hostedFunction</tt><tt class="py-op">(</tt><tt class="py-op">*</tt><tt class="py-name">args</tt><tt class="py-op">,</tt> <tt class="py-op">**</tt><tt class="py-name">kwargs</tt><tt class="py-op">)</tt> </tt>
</div></div><a name="L86"></a><tt class="py-lineno"> 86</tt>  <tt class="py-line"> </tt>
<a name="L87"></a><tt class="py-lineno"> 87</tt>  <tt class="py-line"><tt class="py-comment"># this class was generously donated by a poster on ASPN (aspn.activestate.com)</tt> </tt>
<a name="WeakMethod"></a><div id="WeakMethod-def"><a name="L88"></a><tt class="py-lineno"> 88</tt> <a class="py-toggle" href="#" id="WeakMethod-toggle" onclick="return toggle('WeakMethod');">-</a><tt class="py-line"><tt class="py-comment"></tt><tt class="py-keyword">class</tt> <a class="py-def-name" href="signals.WeakMethod-class.html">WeakMethod</a><tt class="py-op">:</tt> </tt>
</div><div id="WeakMethod-collapsed" style="display:none;" pad="+++" indent="++++"></div><div id="WeakMethod-expanded"><a name="WeakMethod.__init__"></a><div id="WeakMethod.__init__-def"><a name="L89"></a><tt class="py-lineno"> 89</tt> <a class="py-toggle" href="#" id="WeakMethod.__init__-toggle" onclick="return toggle('WeakMethod.__init__');">-</a><tt class="py-line">        <tt class="py-keyword">def</tt> <a class="py-def-name" href="signals.WeakMethod-class.html#__init__">__init__</a><tt class="py-op">(</tt><tt class="py-param">self</tt><tt class="py-op">,</tt> <tt class="py-param">f</tt><tt class="py-op">)</tt><tt class="py-op">:</tt> </tt>
</div><div id="WeakMethod.__init__-collapsed" style="display:none;" pad="+++" indent="++++++++++++"></div><div id="WeakMethod.__init__-expanded"><a name="L90"></a><tt class="py-lineno"> 90</tt>  <tt class="py-line">            <tt class="py-name">self</tt><tt class="py-op">.</tt><tt class="py-name">f</tt> <tt class="py-op">=</tt> <tt class="py-name">f</tt><tt class="py-op">.</tt><tt class="py-name">im_func</tt> </tt>
<a name="L91"></a><tt class="py-lineno"> 91</tt>  <tt class="py-line">            <tt class="py-name">self</tt><tt class="py-op">.</tt><tt class="py-name">c</tt> <tt class="py-op">=</tt> <tt class="py-name">ref</tt><tt class="py-op">(</tt><tt class="py-name">f</tt><tt class="py-op">.</tt><tt class="py-name">im_self</tt><tt class="py-op">)</tt> </tt>
</div><a name="WeakMethod.__call__"></a><div id="WeakMethod.__call__-def"><a name="L92"></a><tt class="py-lineno"> 92</tt> <a class="py-toggle" href="#" id="WeakMethod.__call__-toggle" onclick="return toggle('WeakMethod.__call__');">-</a><tt class="py-line">        <tt class="py-keyword">def</tt> <a class="py-def-name" href="signals.WeakMethod-class.html#__call__">__call__</a><tt class="py-op">(</tt><tt class="py-param">self</tt><tt class="py-op">,</tt> <tt class="py-op">*</tt><tt class="py-param">args</tt><tt class="py-op">,</tt> <tt class="py-op">**</tt><tt class="py-param">kwargs</tt><tt class="py-op">)</tt><tt class="py-op">:</tt> </tt>
</div><div id="WeakMethod.__call__-collapsed" style="display:none;" pad="+++" indent="++++++++++++"></div><div id="WeakMethod.__call__-expanded"><a name="L93"></a><tt class="py-lineno"> 93</tt>  <tt class="py-line">            <tt class="py-keyword">if</tt> <tt class="py-name">self</tt><tt class="py-op">.</tt><tt class="py-name">c</tt><tt class="py-op">(</tt><tt class="py-op">)</tt> <tt class="py-op">==</tt> <tt class="py-name">None</tt> <tt class="py-op">:</tt> <tt class="py-keyword">return</tt> </tt>
<a name="L94"></a><tt class="py-lineno"> 94</tt>  <tt class="py-line">            <tt class="py-name">self</tt><tt class="py-op">.</tt><tt class="py-name">f</tt><tt class="py-op">(</tt><tt class="py-name">self</tt><tt class="py-op">.</tt><tt class="py-name">c</tt><tt class="py-op">(</tt><tt class="py-op">)</tt><tt class="py-op">,</tt> <tt class="py-op">*</tt><tt class="py-name">args</tt><tt class="py-op">,</tt> <tt class="py-op">**</tt><tt class="py-name">kwargs</tt><tt class="py-op">)</tt> </tt>
</div></div><a name="L95"></a><tt class="py-lineno"> 95</tt>  <tt class="py-line"> </tt>
<a name="L96"></a><tt class="py-lineno"> 96</tt>  <tt class="py-line"> </tt>
<a name="L97"></a><tt class="py-lineno"> 97</tt>  <tt class="py-line"><tt class="py-comment">#========================================================</tt> </tt>
<a name="L98"></a><tt class="py-lineno"> 98</tt>  <tt class="py-line"><tt class="py-comment"></tt><tt class="py-comment"># Example usage</tt> </tt>
<a name="L99"></a><tt class="py-lineno"> 99</tt>  <tt class="py-line"><tt class="py-comment"></tt><tt class="py-comment">#========================================================</tt> </tt>
<a name="L100"></a><tt class="py-lineno">100</tt>  <tt class="py-line"><tt class="py-comment"></tt><tt class="py-keyword">if</tt> <tt class="py-name">__name__</tt> <tt class="py-op">==</tt> <tt class="py-string">"__main__"</tt><tt class="py-op">:</tt> </tt>
<a name="Button"></a><div id="Button-def"><a name="L101"></a><tt class="py-lineno">101</tt> <a class="py-toggle" href="#" id="Button-toggle" onclick="return toggle('Button');">-</a><tt class="py-line">    <tt class="py-keyword">class</tt> <a class="py-def-name" href="signals.Button-class.html">Button</a><tt class="py-op">:</tt> </tt>
</div><div id="Button-collapsed" style="display:none;" pad="+++" indent="++++++++"></div><div id="Button-expanded"><a name="Button.__init__"></a><div id="Button.__init__-def"><a name="L102"></a><tt class="py-lineno">102</tt> <a class="py-toggle" href="#" id="Button.__init__-toggle" onclick="return toggle('Button.__init__');">-</a><tt class="py-line">        <tt class="py-keyword">def</tt> <a class="py-def-name" href="signals.Button-class.html#__init__">__init__</a><tt class="py-op">(</tt><tt class="py-param">self</tt><tt class="py-op">)</tt><tt class="py-op">:</tt> </tt>
</div><div id="Button.__init__-collapsed" style="display:none;" pad="+++" indent="++++++++++++++++"></div><div id="Button.__init__-expanded"><a name="L103"></a><tt class="py-lineno">103</tt>  <tt class="py-line">            <tt class="py-comment"># Creating a signal as a member of a class</tt> </tt>
<a name="L104"></a><tt class="py-lineno">104</tt>  <tt class="py-line"><tt class="py-comment"></tt>            <tt class="py-name">self</tt><tt class="py-op">.</tt><tt class="py-name">sigClick</tt> <tt class="py-op">=</tt> <tt id="link-7" class="py-name" targets="Class signals.Signal=signals.Signal-class.html"><a title="signals.Signal" class="py-name" href="#" onclick="return doclink('link-7', 'Signal', 'link-7');">Signal</a></tt><tt class="py-op">(</tt><tt class="py-op">)</tt> </tt>
</div></div><a name="L105"></a><tt class="py-lineno">105</tt>  <tt class="py-line"> </tt>
<a name="Listener"></a><div id="Listener-def"><a name="L106"></a><tt class="py-lineno">106</tt> <a class="py-toggle" href="#" id="Listener-toggle" onclick="return toggle('Listener');">-</a><tt class="py-line">    <tt class="py-keyword">class</tt> <a class="py-def-name" href="signals.Listener-class.html">Listener</a><tt class="py-op">:</tt> </tt>
</div><div id="Listener-collapsed" style="display:none;" pad="+++" indent="++++++++"></div><div id="Listener-expanded"><a name="L107"></a><tt class="py-lineno">107</tt>  <tt class="py-line">        <tt class="py-comment"># a sample method that will be connected to the signal</tt> </tt>
<a name="Listener.onClick"></a><div id="Listener.onClick-def"><a name="L108"></a><tt class="py-lineno">108</tt> <a class="py-toggle" href="#" id="Listener.onClick-toggle" onclick="return toggle('Listener.onClick');">-</a><tt class="py-line"><tt class="py-comment"></tt>        <tt class="py-keyword">def</tt> <a class="py-def-name" href="signals.Listener-class.html#onClick">onClick</a><tt class="py-op">(</tt><tt class="py-param">self</tt><tt class="py-op">)</tt><tt class="py-op">:</tt> </tt>
</div><div id="Listener.onClick-collapsed" style="display:none;" pad="+++" indent="++++++++++++++++"></div><div id="Listener.onClick-expanded"><a name="L109"></a><tt class="py-lineno">109</tt>  <tt class="py-line">            <tt class="py-keyword">print</tt> <tt class="py-string">"onClick "</tt><tt class="py-op">,</tt> <tt class="py-name">repr</tt><tt class="py-op">(</tt><tt class="py-name">self</tt><tt class="py-op">)</tt> </tt>
</div></div><a name="L110"></a><tt class="py-lineno">110</tt>  <tt class="py-line">     </tt>
<a name="L111"></a><tt class="py-lineno">111</tt>  <tt class="py-line">    <tt class="py-comment"># a sample function to connect to the signal</tt> </tt>
<a name="listenFunction"></a><div id="listenFunction-def"><a name="L112"></a><tt class="py-lineno">112</tt> <a class="py-toggle" href="#" id="listenFunction-toggle" onclick="return toggle('listenFunction');">-</a><tt class="py-line"><tt class="py-comment"></tt>    <tt class="py-keyword">def</tt> <a class="py-def-name" href="signals-module.html#listenFunction">listenFunction</a><tt class="py-op">(</tt><tt class="py-op">)</tt><tt class="py-op">:</tt> </tt>
</div><div id="listenFunction-collapsed" style="display:none;" pad="+++" indent="++++++++"></div><div id="listenFunction-expanded"><a name="L113"></a><tt class="py-lineno">113</tt>  <tt class="py-line">        <tt class="py-keyword">print</tt> <tt class="py-string">"listenFunction"</tt> </tt>
</div><a name="L114"></a><tt class="py-lineno">114</tt>  <tt class="py-line">    </tt>
<a name="L115"></a><tt class="py-lineno">115</tt>  <tt class="py-line">    <tt class="py-comment"># a function that accepts arguments</tt> </tt>
<a name="listenWithArgs"></a><div id="listenWithArgs-def"><a name="L116"></a><tt class="py-lineno">116</tt> <a class="py-toggle" href="#" id="listenWithArgs-toggle" onclick="return toggle('listenWithArgs');">-</a><tt class="py-line"><tt class="py-comment"></tt>    <tt class="py-keyword">def</tt> <a class="py-def-name" href="signals-module.html#listenWithArgs">listenWithArgs</a><tt class="py-op">(</tt><tt class="py-param">text</tt><tt class="py-op">)</tt><tt class="py-op">:</tt> </tt>
</div><div id="listenWithArgs-collapsed" style="display:none;" pad="+++" indent="++++++++"></div><div id="listenWithArgs-expanded"><a name="L117"></a><tt class="py-lineno">117</tt>  <tt class="py-line">        <tt class="py-keyword">print</tt> <tt class="py-string">"listenWithArgs: "</tt><tt class="py-op">,</tt> <tt class="py-name">text</tt> </tt>
</div><a name="L118"></a><tt class="py-lineno">118</tt>  <tt class="py-line"> </tt>
<a name="L119"></a><tt class="py-lineno">119</tt>  <tt class="py-line">    <tt class="py-name">b</tt> <tt class="py-op">=</tt> <tt class="py-name">Button</tt><tt class="py-op">(</tt><tt class="py-op">)</tt> </tt>
<a name="L120"></a><tt class="py-lineno">120</tt>  <tt class="py-line">    <tt class="py-name">l</tt> <tt class="py-op">=</tt> <tt class="py-name">Listener</tt><tt class="py-op">(</tt><tt class="py-op">)</tt> </tt>
<a name="L121"></a><tt class="py-lineno">121</tt>  <tt class="py-line">     </tt>
<a name="L122"></a><tt class="py-lineno">122</tt>  <tt class="py-line">    <tt class="py-comment"># Demonstrating connecting and calling signals</tt> </tt>
<a name="L123"></a><tt class="py-lineno">123</tt>  <tt class="py-line"><tt class="py-comment"></tt>    <tt class="py-keyword">print</tt> </tt>
<a name="L124"></a><tt class="py-lineno">124</tt>  <tt class="py-line">    <tt class="py-keyword">print</tt> <tt class="py-string">"should see one message"</tt> </tt>
<a name="L125"></a><tt class="py-lineno">125</tt>  <tt class="py-line">    <tt class="py-name">b</tt><tt class="py-op">.</tt><tt class="py-name">sigClick</tt><tt class="py-op">.</tt><tt id="link-8" class="py-name" targets="Method signals.Signal.connect()=signals.Signal-class.html#connect"><a title="signals.Signal.connect" class="py-name" href="#" onclick="return doclink('link-8', 'connect', 'link-8');">connect</a></tt><tt class="py-op">(</tt><tt class="py-name">l</tt><tt class="py-op">.</tt><tt class="py-name">onClick</tt><tt class="py-op">)</tt> </tt>
<a name="L126"></a><tt class="py-lineno">126</tt>  <tt class="py-line">    <tt class="py-name">b</tt><tt class="py-op">.</tt><tt class="py-name">sigClick</tt><tt class="py-op">(</tt><tt class="py-op">)</tt> </tt>
<a name="L127"></a><tt class="py-lineno">127</tt>  <tt class="py-line"> </tt>
<a name="L128"></a><tt class="py-lineno">128</tt>  <tt class="py-line">    <tt class="py-comment"># Disconnecting all signals</tt> </tt>
<a name="L129"></a><tt class="py-lineno">129</tt>  <tt class="py-line"><tt class="py-comment"></tt>    <tt class="py-keyword">print</tt> </tt>
<a name="L130"></a><tt class="py-lineno">130</tt>  <tt class="py-line">    <tt class="py-keyword">print</tt> <tt class="py-string">"should see no messages"</tt> </tt>
<a name="L131"></a><tt class="py-lineno">131</tt>  <tt class="py-line">    <tt class="py-name">b</tt><tt class="py-op">.</tt><tt class="py-name">sigClick</tt><tt class="py-op">.</tt><tt id="link-9" class="py-name" targets="Method signals.Signal.disconnectAll()=signals.Signal-class.html#disconnectAll"><a title="signals.Signal.disconnectAll" class="py-name" href="#" onclick="return doclink('link-9', 'disconnectAll', 'link-9');">disconnectAll</a></tt><tt class="py-op">(</tt><tt class="py-op">)</tt> </tt>
<a name="L132"></a><tt class="py-lineno">132</tt>  <tt class="py-line">    <tt class="py-name">b</tt><tt class="py-op">.</tt><tt class="py-name">sigClick</tt><tt class="py-op">(</tt><tt class="py-op">)</tt> </tt>
<a name="L133"></a><tt class="py-lineno">133</tt>  <tt class="py-line"> </tt>
<a name="L134"></a><tt class="py-lineno">134</tt>  <tt class="py-line">    <tt class="py-comment"># connecting multiple functions to a signal</tt> </tt>
<a name="L135"></a><tt class="py-lineno">135</tt>  <tt class="py-line"><tt class="py-comment"></tt>    <tt class="py-keyword">print</tt> </tt>
<a name="L136"></a><tt class="py-lineno">136</tt>  <tt class="py-line">    <tt class="py-keyword">print</tt> <tt class="py-string">"should see two messages"</tt> </tt>
<a name="L137"></a><tt class="py-lineno">137</tt>  <tt class="py-line">    <tt class="py-name">l2</tt> <tt class="py-op">=</tt> <tt class="py-name">Listener</tt><tt class="py-op">(</tt><tt class="py-op">)</tt> </tt>
<a name="L138"></a><tt class="py-lineno">138</tt>  <tt class="py-line">    <tt class="py-name">b</tt><tt class="py-op">.</tt><tt class="py-name">sigClick</tt><tt class="py-op">.</tt><tt id="link-10" class="py-name"><a title="signals.Signal.connect" class="py-name" href="#" onclick="return doclink('link-10', 'connect', 'link-8');">connect</a></tt><tt class="py-op">(</tt><tt class="py-name">l</tt><tt class="py-op">.</tt><tt class="py-name">onClick</tt><tt class="py-op">)</tt> </tt>
<a name="L139"></a><tt class="py-lineno">139</tt>  <tt class="py-line">    <tt class="py-name">b</tt><tt class="py-op">.</tt><tt class="py-name">sigClick</tt><tt class="py-op">.</tt><tt id="link-11" class="py-name"><a title="signals.Signal.connect" class="py-name" href="#" onclick="return doclink('link-11', 'connect', 'link-8');">connect</a></tt><tt class="py-op">(</tt><tt class="py-name">l2</tt><tt class="py-op">.</tt><tt class="py-name">onClick</tt><tt class="py-op">)</tt> </tt>
<a name="L140"></a><tt class="py-lineno">140</tt>  <tt class="py-line">    <tt class="py-name">b</tt><tt class="py-op">.</tt><tt class="py-name">sigClick</tt><tt class="py-op">(</tt><tt class="py-op">)</tt> </tt>
<a name="L141"></a><tt class="py-lineno">141</tt>  <tt class="py-line">     </tt>
<a name="L142"></a><tt class="py-lineno">142</tt>  <tt class="py-line">    <tt class="py-comment"># disconnecting individual functions</tt> </tt>
<a name="L143"></a><tt class="py-lineno">143</tt>  <tt class="py-line"><tt class="py-comment"></tt>    <tt class="py-keyword">print</tt> </tt>
<a name="L144"></a><tt class="py-lineno">144</tt>  <tt class="py-line">    <tt class="py-keyword">print</tt> <tt class="py-string">"should see two messages"</tt> </tt>
<a name="L145"></a><tt class="py-lineno">145</tt>  <tt class="py-line">    <tt class="py-name">b</tt><tt class="py-op">.</tt><tt class="py-name">sigClick</tt><tt class="py-op">.</tt><tt id="link-12" class="py-name"><a title="signals.Signal.disconnect" class="py-name" href="#" onclick="return doclink('link-12', 'disconnect', 'link-1');">disconnect</a></tt><tt class="py-op">(</tt><tt class="py-name">l</tt><tt class="py-op">.</tt><tt class="py-name">onClick</tt><tt class="py-op">)</tt> </tt>
<a name="L146"></a><tt class="py-lineno">146</tt>  <tt class="py-line">    <tt class="py-name">b</tt><tt class="py-op">.</tt><tt class="py-name">sigClick</tt><tt class="py-op">.</tt><tt id="link-13" class="py-name"><a title="signals.Signal.connect" class="py-name" href="#" onclick="return doclink('link-13', 'connect', 'link-8');">connect</a></tt><tt class="py-op">(</tt><tt class="py-name">listenFunction</tt><tt class="py-op">)</tt> </tt>
<a name="L147"></a><tt class="py-lineno">147</tt>  <tt class="py-line">    <tt class="py-name">b</tt><tt class="py-op">.</tt><tt class="py-name">sigClick</tt><tt class="py-op">(</tt><tt class="py-op">)</tt> </tt>
<a name="L148"></a><tt class="py-lineno">148</tt>  <tt class="py-line">     </tt>
<a name="L149"></a><tt class="py-lineno">149</tt>  <tt class="py-line">    <tt class="py-comment"># signals disconnecting automatically</tt> </tt>
<a name="L150"></a><tt class="py-lineno">150</tt>  <tt class="py-line"><tt class="py-comment"></tt>    <tt class="py-keyword">print</tt> </tt>
<a name="L151"></a><tt class="py-lineno">151</tt>  <tt class="py-line">    <tt class="py-keyword">print</tt> <tt class="py-string">"should see one message"</tt> </tt>
<a name="L152"></a><tt class="py-lineno">152</tt>  <tt class="py-line">    <tt class="py-name">b</tt><tt class="py-op">.</tt><tt class="py-name">sigClick</tt><tt class="py-op">.</tt><tt id="link-14" class="py-name"><a title="signals.Signal.disconnectAll" class="py-name" href="#" onclick="return doclink('link-14', 'disconnectAll', 'link-9');">disconnectAll</a></tt><tt class="py-op">(</tt><tt class="py-op">)</tt> </tt>
<a name="L153"></a><tt class="py-lineno">153</tt>  <tt class="py-line">    <tt class="py-name">b</tt><tt class="py-op">.</tt><tt class="py-name">sigClick</tt><tt class="py-op">.</tt><tt id="link-15" class="py-name"><a title="signals.Signal.connect" class="py-name" href="#" onclick="return doclink('link-15', 'connect', 'link-8');">connect</a></tt><tt class="py-op">(</tt><tt class="py-name">l</tt><tt class="py-op">.</tt><tt class="py-name">onClick</tt><tt class="py-op">)</tt> </tt>
<a name="L154"></a><tt class="py-lineno">154</tt>  <tt class="py-line">    <tt class="py-name">b</tt><tt class="py-op">.</tt><tt class="py-name">sigClick</tt><tt class="py-op">.</tt><tt id="link-16" class="py-name"><a title="signals.Signal.connect" class="py-name" href="#" onclick="return doclink('link-16', 'connect', 'link-8');">connect</a></tt><tt class="py-op">(</tt><tt class="py-name">l2</tt><tt class="py-op">.</tt><tt class="py-name">onClick</tt><tt class="py-op">)</tt> </tt>
<a name="L155"></a><tt class="py-lineno">155</tt>  <tt class="py-line">    <tt class="py-keyword">del</tt> <tt class="py-name">l2</tt>     </tt>
<a name="L156"></a><tt class="py-lineno">156</tt>  <tt class="py-line">    <tt class="py-name">b</tt><tt class="py-op">.</tt><tt class="py-name">sigClick</tt><tt class="py-op">(</tt><tt class="py-op">)</tt> </tt>
<a name="L157"></a><tt class="py-lineno">157</tt>  <tt class="py-line">     </tt>
<a name="L158"></a><tt class="py-lineno">158</tt>  <tt class="py-line">    <tt class="py-comment"># example with arguments and a local signal</tt> </tt>
<a name="L159"></a><tt class="py-lineno">159</tt>  <tt class="py-line"><tt class="py-comment"></tt>    <tt class="py-keyword">print</tt> </tt>
<a name="L160"></a><tt class="py-lineno">160</tt>  <tt class="py-line">    <tt class="py-keyword">print</tt> <tt class="py-string">"should see one message"</tt> </tt>
<a name="L161"></a><tt class="py-lineno">161</tt>  <tt class="py-line">    <tt class="py-name">sig</tt> <tt class="py-op">=</tt> <tt id="link-17" class="py-name"><a title="signals.Signal" class="py-name" href="#" onclick="return doclink('link-17', 'Signal', 'link-7');">Signal</a></tt><tt class="py-op">(</tt><tt class="py-op">)</tt> </tt>
<a name="L162"></a><tt class="py-lineno">162</tt>  <tt class="py-line">    <tt class="py-name">sig</tt><tt class="py-op">.</tt><tt id="link-18" class="py-name"><a title="signals.Signal.connect" class="py-name" href="#" onclick="return doclink('link-18', 'connect', 'link-8');">connect</a></tt><tt class="py-op">(</tt><tt class="py-name">listenWithArgs</tt><tt class="py-op">)</tt> </tt>
<a name="L163"></a><tt class="py-lineno">163</tt>  <tt class="py-line">    <tt class="py-name">sig</tt><tt class="py-op">(</tt><tt class="py-string">"Hello, World!"</tt><tt class="py-op">)</tt> </tt>
<a name="L164"></a><tt class="py-lineno">164</tt>  <tt class="py-line"> </tt><script type="text/javascript">
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